Hinge-joint for revolvers.



PATENTED JUNE 4, 1907.

J.G.E.LEAGH. HINGE JOINT FOR REVOLVERS. APPLICATION FILED MAY 26, 1905. RENEWED A211. 16, 1907.

Qmimemo James GEL-each, anoehtoz,

rm: NORRIS PETERS co., WASHINGTON, unc.

ii TE sures PATENT rricn HINGE-JOINT FOR 'FREVOLVEFIS.

Specification of Letters Patent.

Patented June 4, 1907.

Application filed May 26, 1905. Renewed April 16, 1907. Serial ITO- 868,585.

To all whom it may concern.-

Be itknown that 1, JAMES C. E. LEACH, a citizen of the United States, residing at Norwich, in the county of New London and State of Connecticut, have invented certain new and useful Improvements in Hinge- Joints for Revolvers, of'which the following is a specification.

The chief aim of my present invention is to improve the cam by means of which the ejector is checked during the opening of the arm, in order to expel the empty cartridge shells from the cylinder. In this class of arms various forms of cams and so called lifters have been mounted upon the joint pin that connects the frame and barrel, but in most, if not all such prior constructions, the cam or lifter has been so mounted upon the joint pin that it may move laterally with respect to the said joint pin whenever it is desired to return the ejector to its seat in the cylinder. In contradistinction to such prior constructions, my present invention includes a cam which is so mounted upon the joint pin that it (the cam) may partially rotate on said pin but can not be laterally deflected thereon. This new construction provides an exceedingly strong and serviceable cam and one that will not readily get out of repair.

In the accompanying drawings I have illustrated my said invention, Figure 1 being a side elevation of a revolver embodying the same, the barrel being shown as partially swung open, and also as cut away in part to disclose those elements of the ejector mechanism that are closely related to my improved form ofcam. Fig. 2 is an under-side view of the hinge pin by means of which the barrel is connected to the frame. Figs. 3 and 4 are edge and side views of a complete cam embodying my improvements, the joint pin being indicated by dotted lines in the said Fig. 3. In Fig. 5 I have shown the lifter g and the cam proper h detached from each other.

In these drawings the reference letter a denotes a revolver frame as a whole, I) the barrel, 0 the cylinder, d the joint pin by means of which the barrel is hinged to the frame, and e the shell ejector, the latter being of spider form and mounted upon a spring-controlled stem e in the usual manner; that is to say the arrangement of-the stem, spring and spider is such that the said spring seeks constantly to return the ejector to its seat in the end of the cylinder.

Mounted upon the joint pin d is a disk 9 that is provided with a radial projection 9 that is adapted to engage the inner end of the ejector stem e. Pivoted upon the face of the disk 9 by means of a stud g is a second disk h, whose diameter is substantially the same as that of the disk 9 already described. The disk h, which serves as the cam by means of which the movements of the disk 9 are controlled, is formed with a central opening h that is somewhat elongated in order that the disk It may move laterally with respect to the disk 9 upon which it is mounted, and disk It is also rovided with an offset or shoulder 7L2 that is adapted to engage the frame a, as seen in Fig. 1, during the operation of ejecting the em ty cartridge shells. The top edge portion 0 disk h is cut away, as at 72/3, in order to receive a spring i one of whose ends is secured to .the disk h in any practical manner. As here shown, the disk is notched and one end of said spring is forcibly held in the said notch, as will be understood by reference to the drawings.

When the disks 9 and h are mounted upon each other, as seen in Figs. 1, 3 and 4, the spring i is forced inward; that is to say toward the center of the disk hby a stud 9 that is fixedly located in the disk 9. The

tendency of the spring 1' is to force the laterally-movable disk It downward and thus to hold the projection if in engagement with the frame a until such time as that portion of the barrel lying immediately in front of the described disks shall engage the projection 7L2 and force it inward and out of engagement with the frame, when the ejector spring 6 will act to partially revolve the disks on the joint pin by forcing the projection g farther forward in the barrel, and will thus allow the ejector to return to its seat in the cylinder:

As I have stated above, this construction provides an unusually strong and serviceable ifter for the ejector stem and one which can not easily be worn out or disarranged.

Having thus described my invention, I claim 1. In combination with the hinge joint, and spring-actuated ejector stem, of a revolver, a lifter disk rotatably mounted on the joint pin, and formed with a radial projection engaging said ejector stem, a cam disk mounted on the joint pin parallel with and pivoted to l the said lifter disk and capable of both rotary and lateral movement With respect to the oint pin, a shoulder 72 on said cam disk, and a spring secured at one end to the cam disk and engaging a stud on the lifter disk for holding said shoulder in engagement with the revolver frame.

2. The combination with the frame, barrel, and cylinder of a revolver, of a joint pin connecting said frame and barrel, a disk, mounted on said pin having radial projection, a cam disk movable parallel with and eccentrically pivoted to the face of said firstmentioned disk and having elongated central opening receiving the joint in, said cam disk formed also with a shou der, and diametrically op osite cut-away portion, a flat spring in sai cut-away portion held at one end to the cam disk, and a stud projecting from the face of the first-mentioned disk and engaging said spring between its ends.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

JAMES C. E. LEAOH.

Witnesses:

FRANK H. ALLEN, MAY F. RITCHIE. 

